package com.CoreryBlack.interceptors;

import com.CoreryBlack.util.JwtUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;

/**
 * @Description TokenInterceptor
 * @Author CoreryBlack
 * @Date 2024-09-22
 */
@Slf4j
@Component
public class TokenInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //1.获取请求url
        String url = request.getRequestURL().toString();


//        //2.判断请求url中是否包含login,如果包含,说明登录操作,放行
//        if(url.contains("login")){//登录请求
//            log.info("登录请求，直接放行");
//            return true;
//        }

        //3.获取请求头中的令牌(token)
        String jwt = request.getHeader("token");

        //4.判断令牌是否存在，如果不存在，返回错误结果(未登录)
        if(!StringUtils.hasLength(jwt)){//jwt为空
            log.info("获取到jwt令牌为空，返回错误结果");
            response.setStatus(HttpStatus.SC_UNAUTHORIZED);
            return false;
        }

        //5.解析token，如果解析失败，返回错误结果(未登录)
        try {
            JwtUtils.parseJWT(jwt);

            //打印员工认证校验通过信息
            log.info("登录jwt认证校验通过!");
        } catch (Exception e) {
            e.printStackTrace();
            log.info("解析令牌失败，返回错误结果");
            response.setStatus(HttpStatus.SC_UNAUTHORIZED);
            return false;
        }

        //6.放行
        log.info("令牌合法，放行");
        return true;
    }

}
